I had a Sirius account a few years back. Recently I received an email for 6 months for $25. I signed up and then found out to listen on the internet or iOS devices would cost me $3 more a month. Not sure if that's because I got a discount on the service or not. But with the additional $3 a month service, I can listen on either of my iPhone 4's, my iPod touch, my iPad 2 or my computer.